#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
#include<utility>
using namespace std;

int main() {
	pair<int, double> p1(1, 3.14);
	pair<char, string> p2('a', "hello");

	cout << p1.first << ", " << p1.second << endl;
	cout << p2.first << ", " << p2.second << endl;
	return 0;
}